text: """check different signatures"""
  
  __revision__ = 0
  
  class Abcd:
      '''dummy'''
      def __init__(self):
          self.aarg = False 
      def abcd(self, aaa=1, bbbb=None):
          """hehehe"""
          print self, aaa, bbbb
      def args(self):
          """gaarrrggll"""
          self.aarg = True
  
  class Cdef(Abcd):
      """dummy"""
      def __init__(self, aaa):
          Abcd.__init__(self)
          self.aaa = aaa
  
      def abcd(self, aaa, bbbb=None):
          """hehehe"""
          print self, aaa, bbbb
  